def import_tdl_module (filename,text=None,config=0):
"""Imports a TDL module.
Parameters:
filename: script location
text: text of module. If none, file will be re-read.
Return value:
a tuple of (module,text), where module is the newly-imported
TDL module, and text is the module text.
Exceptions thrown:
Any import error results in an exception. This is always
a TDL.CumulativeError exception containing an error list.
Other exceptions may indicate an internal failure.
""";
_dprint(1,"importing",filename);
global _current_filename;
_current_filename = filename;
# initialize global nodescope (and repository)
meqds.clear_forest();
try:
reload(Timba.TDL.Settings);
# reset TDL script options, unless config=None ('0' is used as default, causing the filename to be substituted)
TDLOptions.init_script(filename);
if config is not None:
TDLOptions.init_options(config or filename);
# remove .pyo file as that can have cached paths and directories may have changed
# (see bug 677)
try:
os.unlink(os.path.splitext(filename)[0]+'.pyo');
except:
pass;
# open file
infile = file(filename,'r');
if text is None:
text = infile.read();
infile.seek(0);
# infile is now an open input file object, and text is the script
# flush all modules imported via previous TDL run
global _tdlmodlist;
_dprint(1,'clearing out TDL-imported modules',_tdlmodlist);
for m in _tdlmodlist:
try: del sys.modules[m];
except KeyError: pass;
# remember which modules are imported
global _prior_compile_modules;
_prior_compile_modules = set(sys.modules.iterkeys());
modname = '__tdlruntime';
try:
TDLOptions.enable_save_config(False);
imp.acquire_lock();
_tdlmod = imp.load_source(modname,filename,infile);
finally:
TDLOptions.enable_save_config(True);
TDLOptions.save_config();
imp.release_lock();
infile.close();
_update_modlist();
return (_tdlmod,text);
# CumulativeError exceptions returned as is
except TDL.CumulativeError:
_dprint(0,'cumulative error importing TDL file:',filename);
traceback.print_exc();
args = sys.exc_info()[1].args;
_dprint(0,'number of errors in list:',len(args));
_dprint(1,'errors are: {',args,'}');
raise;
# Other exceptions wrapped in a CumulativeError, and
# location information is added in
except:
(etype,exc,tb) = sys.exc_info();
_dprint(0,'exception importing TDL file:',filename);
traceback.print_exception(etype,exc,tb);
# use TDL add_error() to process the error, since this automatically
# adds location information
ns = TDL.NodeScope();
ns.AddError(exc,traceback.extract_tb(tb),error_limit=None);
# re-raise as a CumulativeError
raise TDL.CumulativeError(*ns.GetErrors());
def import_tdl_module(filename, text=None, config=0):
"""Imports a TDL module.
Parameters:
filename: script location
text: text of module. If none, file will be re-read.
Return value:
a tuple of (module,text), where module is the newly-imported
TDL module, and text is the module text.
Exceptions thrown:
Any import error results in an exception. This is always
a TDL.CumulativeError exception containing an error list.
Other exceptions may indicate an internal failure.
"""
_dprint(1, "importing", filename)
global _current_filename
_current_filename = filename
# initialize global nodescope (and repository)
meqds.clear_forest()
try:
reload(Timba.TDL.Settings)
# reset TDL script options, unless config=None ('0' is used as default, causing the filename to be substituted)
TDLOptions.init_script(filename)
if config is not None:
TDLOptions.init_options(config or filename)
# remove .pyo file as that can have cached paths and directories may have changed
# (see bug 677)
try:
os.unlink(os.path.splitext(filename)[0] + '.pyo')
except:
pass
# open file
infile = file(filename, 'r')
if text is None:
text = infile.read()
infile.seek(0)
# infile is now an open input file object, and text is the script
# flush all modules imported via previous TDL run
global _tdlmodlist
_dprint(1, 'clearing out TDL-imported modules', _tdlmodlist)
for m in _tdlmodlist:
try:
del sys.modules[m]
except KeyError:
pass
# remember which modules are imported
global _prior_compile_modules
_prior_compile_modules = set(sys.modules.iterkeys())
modname = '__tdlruntime'
try:
TDLOptions.enable_save_config(False)
imp.acquire_lock()
_tdlmod = imp.load_source(modname, filename, infile)
finally:
TDLOptions.enable_save_config(True)
TDLOptions.save_config()
imp.release_lock()
infile.close()
_update_modlist()
return (_tdlmod, text)
# CumulativeError exceptions returned as is
except TDL.CumulativeError:
_dprint(0, 'cumulative error importing TDL file:', filename)
traceback.print_exc()
args = sys.exc_info()[1].args
_dprint(0, 'number of errors in list:', len(args))
_dprint(1, 'errors are: {', args, '}')
raise
# Other exceptions wrapped in a CumulativeError, and
# location information is added in
except:
(etype, exc, tb) = sys.exc_info()
_dprint(0, 'exception importing TDL file:', filename)
traceback.print_exception(etype, exc, tb)
# use TDL add_error() to process the error, since this automatically
# adds location information
ns = TDL.NodeScope()
ns.AddError(exc, traceback.extract_tb(tb), error_limit=None)
# re-raise as a CumulativeError
raise TDL.CumulativeError(*ns.GetErrors())
